CN201122603Y - Light-transmitting double-layer glass solar cell module - Google Patents

Abstract

The utility model relates to a light-transmitting double-layer glass solar cell assembly, which is composed of a surface layer, an upper encapsulation layer, a solar cell group layer, a lower encapsulation layer and a bottom layer from top to bottom, and is characterized in that the solar cell group layer The solar cells are arranged in an array, and the vertical and horizontal intervals between the sheets are 15-25mm; the surface layer and the bottom layer are made of transparent materials. The utility model can not only gather light but also generate electricity in a large area, has the function of decoration and can prolong the service life of the solar cell assembly.

Description

Light-transmitting double-layer glass solar cell module

technical field

The utility model relates to a light-transmitting double-layer glass solar cell assembly used for building curtain walls or roofs of residences and office buildings combined with photovoltaics.

Background technique

Modern architecture is trying to integrate architecture, ecology and science and technology into one. The building material integrated solar cell module is the embodiment of this concept, and this kind of building is easy to be generally accepted by designers, building owners and consumers. At present, the packaging structure used for solar cell modules on the curtain wall or roof of residential and office buildings on the market is: glass-EVA (ethylene-vinyl acetate copolymer)-solar cell-EVA-bottom plate material (including TPT weather resistance Permanent composite fluoroplastic film, tempered glass, transparent or translucent PVC film) are laminated and packaged. However, the bottom plate is packaged with TPT, which cannot transmit light. If the PVC film is used, the service life cannot meet the requirements. If it is packaged with tempered glass, the solder joints on the back will be exposed and affect the appearance. The weather-proof sealability of the above-mentioned components is also defective during installation, which may cause water vapor to infiltrate and short-circuit the solar cells in a short period of time, thereby ending the life of the solar cell components.

Contents of the invention

The technical problem to be solved by the utility model is the above-mentioned deficiencies in the light transmittance, decoration and sealing of the existing building material integrated solar cell components, and a new building material integrated solar cell component—transparent Double-glazed solar modules.

The technical scheme that the utility model solves its technical problem adopts is:

A light-transmitting double-layer glass solar cell module is composed of a surface layer, an upper encapsulation layer, a solar cell group layer, a lower encapsulation layer and a bottom layer from top to bottom, and is characterized in that the solar cells in the solar cell group layer The array arrangement is adopted, and the vertical and horizontal intervals between the sheets are 15-25mm; the surface layer and the bottom layer are made of transparent materials.

The bottom layer of the utility model can be made of screen-printed tempered glass with patterns, which can not only cover the solder joints in the solar cell group, but also beautify the environment. At the same time, since the surface and the bottom layer are made of transparent materials, and the solar cells are arranged at intervals, the light can be irradiated into the room through the gaps between the solar cells to play the role of lighting and decoration.

The utility model realizes the integrated integration of solar photovoltaic power generation and buildings, saves the land occupation of the solar land power station and the related protection facilities of the power station, and can replace some building materials. It is relatively independent and does not require remote wiring and power transmission. It has the characteristics of environmental protection, energy saving, aesthetics, power generation, safety and non-pollution of other building materials integrated solar cell modules, and it can not only collect sunlight but also generate electricity in a large area, and also has a decorative function. It has high cost performance, and its aesthetics and service life are more prominent than similar products.

Description of drawings

Fig. 1 is a structural schematic diagram of a light-transmitting double-layer glass solar cell module;

Figure 2 is a schematic diagram of the electrical connection of the solar cell;

3 is a schematic layout diagram of a solar battery pack;

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described by way of example.

Referring to Fig. 1 to Fig. 2, the utility model is a planar square block structure composed of five layers of planar materials: surface layer 1, upper encapsulation layer 2, solar battery sheet group layer 3, lower encapsulation layer 4 and Bottom 5.

The surface layer 1 is the outermost protective layer of the solar cell group. Since it is facing the sunlight, it needs to have good light transmission, but also needs to have a certain hardness and strength. Therefore, the surface layer 1 of the utility model usually adopts an iron content < 0.02%, visible light transmittance> 91% made of low-iron tempered glass.

Solar battery sheet group layer 3 The core component of the utility model for power generation, it can be composed of multiple monocrystalline silicon or polycrystalline silicon solar cells according to certain electrical performance technical parameters (voltage U, current I, power P, etc.), through series connection and In the parallel connection method, the positive and negative poles of the solar cells are welded by the tin-coated solder strips 6 of the interconnection strips and the tin-coated solder strips of the bus bars to form a solar cell group. In this embodiment, 48 cells are connected in series according to 6×8. , In order to facilitate the transmission of light, there is a gap of 15-25mm between the solar cells.

The upper and lower upper encapsulation layers 2 and lower encapsulation layers 4 of the solar cell group are both made of two layers of EVA films. The bottom layer 5 is screen printing glass, and the pattern on it can be changed according to the requirements of customers.

Both the upper encapsulation layer 2 and the lower encapsulation layer 4 are made of a film material with good light transmittance, such as anti-aging EVA (ethylene-vinyl acetate copolymer). The encapsulation material is in a molten state at 140°C. After vacuuming and lamination, the encapsulation material integrates the surface layer 1, the middle solar cell group layer 3 and the bottom layer 5. After cooling, the five layers of materials form an integration. Composite material - light-transmitting double-layer glass solar cell module.

The bottom layer 5 adopts tempered glass of 4-8mm, and the thickness is selected according to the installation area and strength requirements, and some artistic patterns can also be made according to different requirements of customers for aesthetic decoration.

The utility model can apply weather-resistant sealant 8 on its edge and paste edge sealing tape 9 to enhance its sealing and weather resistance, resist the infiltration of external water vapor, prolong the service life of the component, and increase the frame of aluminum alloy or other materials as required 10. It is both beautiful and protective. The frame of this embodiment is made of high-quality aluminum alloy frame with sandblasting and anodic oxidation, and the thickness of the aluminum oxide film on its surface is >15 μm.

As shown in Figure 3, the junction box 11 is installed on the edge of the utility model, and the edge is the extraction end of the positive and negative connection wires of the battery pack, which is made of tin-coated copper strip 7 of the bus bar. And the waterproof function, which can prevent the connection end from being corroded, and can prevent the water from intruding through the plug to cause a short circuit. In this embodiment, a better PPO material is used as the junction box shell and inner insulation material, silver-plated copper electrode material is used as the terminal, and three diodes are configured to reduce the hot spot effect.

Claims (5)

1. A light-transmitting double-layer glass solar cell assembly is composed of a surface layer, an upper encapsulation layer, a solar cell group layer, a lower encapsulation layer and a bottom layer from top to bottom, and is characterized in that the solar energy in the solar cell group layer The battery sheets are arranged in an array, and the vertical and horizontal intervals between the sheets are 15-25mm; the surface layer and the bottom layer are made of transparent materials. 2. The light-transmitting double-layer glass solar cell module according to claim 1, wherein the bottom layer is made of screen-printed tempered glass with patterns on the surface. 3. The light-transmitting double-layer glass solar cell module according to claim 1, characterized in that a sealed and waterproof junction box is installed on one edge of the module. 4. The light-transmitting double-layer glass solar cell module according to claim 1, 2 or 3, characterized in that a layer of weather-resistant sealant is applied to the edge of the module. 5. The light-transmitting double-layer glass solar cell module according to claim 1, 2 or 3, characterized in that a frame is provided outside the module, and a sealing tape is arranged between the frame and the module.

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